| abstract |
The invention relates to intrinsically electrically conductive polymers, preferably oligomers, which, in the oxidized form, are completely soluble in dipolar aprotic solvents at room temperature and which contain structural units which are derived from at least one monomer of the formula (I) <IMAGE> (I) in which R1 is a C1-C2-alkoxy group or -O(CH2CH2O)nCH3 with n=1 to 4 and R2 is a hydrogen atom, a C1-C12-alkyl group, a C1-C12-alkoxy group or -O(CH2CH2O)nCH3 with n=1 to 4, or R1 and R2 together are -O(CH2)m-CH2 or -O(CH2)m-O- with m=1 to 12. The invention also relates to a process for the preparation of these polymers by electrochemical polymerization of at least one monomer of this formula (I) in the presence of a conductive salt, the anode having a specific surface area of at least 0.01 m2/g and preferably a gauze, sponge, fabric or felt structure, the electrolyte solvent being dipolar and aprotic and the electrolyte system being moved only slightly or not at all relative to the anode. The polymers according to the invention can readily be used especially for coating purposes. |